how to fix the P0456 code in my Tesla Model 3 Original (2017-2023)

Solution

1. Preparation

• Gather tools and parts required for the repair.
• Disconnect the vehicle's battery to prevent electrical issues.

2. Inspect and Replace Fuel Cap

• Tools Required: None specifically, but a replacement fuel cap may be needed.
• Check the fuel cap for proper sealing.
• If damaged, replace the fuel cap with a new one, ensuring it is the correct part for your Tesla Model 3.

3. Inspect and Replace EVAP Hoses

• Tools Required: Pliers, socket set.
• Remove any clamps securing the EVAP hoses.
• Visually inspect hoses for cracks or wear.
• If damaged, replace with OEM or compatible hoses, ensuring all connections are secure and tight.

4. Inspect and Replace EVAP Canister

• Tools Required: Socket set, screwdrivers.
• Locate the EVAP canister (usually near the fuel tank).
• Disconnect any electrical connectors and hoses attached to the canister.
• Remove the canister from its mounting bracket.
• Inspect for cracks or blockages; if damaged, replace with a new canister.

5. Reconnect Battery and Clear Codes

• Reconnect the vehicle's battery.
• Use the OBD-II scanner to clear the P0456 code.
• Start the vehicle and monitor for any warning lights.